Fingerprint acquisition apparatus and method therefor
US7715601B2 · kind B2 · utility
1Cited by
3References
12Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 4, 2006 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Mar 11, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1306
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A fingerprint acquisition apparatus including a plurality of sensing units is provided. The fingerprint acquisition apparatus is used for sensing the ridge portion and the valley portion of a fingerprint. Each sensing unit includes a built-in capacitor. There is an inducing capacitance generated between each of the sensing units and the fingerprint while the fingerprint touches each of the sensing units. The fingerprint acquisition apparatus of the invention generates a fingerprint pattern by detecting the difference of inducing capacitances between the ridge portion of the fingerprint and the valley portion of the fingerprint.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.